Forming-dies.



C VSONNEBORN.

FowMvNGjmEs. APPLICATION FILED APR I, I9I' I.

. Patented Aug.' 10,1915.

3 SHEETS-SHEET I.

FIGA* Wsw-MESES 1 'D srarns Para ormoni.

CHARLES SONNEBORN, 0F WEST. PITTSBURG, PENNSYLVANIA, ASSIGNOR TO PRESSED 7 METAL RADIATOR COMPANY, OF PIT'.ISIBURGl'II, PENNSYI.|`V'A1\TIA,` A CORPORATION or PENNSYLVANIA.

FORMING-DIES.

tApplication filed April l,A 1914. Serial No', 828,859.

'T0 czZZ whom 'it may concern i Be it known that I, CHARLES SONNBORN,

a resident of West Pittsburg', inthe county of Lawrence and State of Pennsylvania, have invented a new and useful Improvement in Forming-Dies, of which the follow-v ing is a specification.

This inventionrelates to dies forformmg orshapmg sheet metal articles.

The object of the. invention is to provide dies for this purpose by means of which the articles can be very accurately shaped or formed, which are adjustable so as to adapt them-for forming similar articles of different sizes, in which the various -parts of the die are formed in separate pieces 'so that each'can be accurately shaped, and dies in which' the wearingparts can be readily replaced when worn.

Another object of the invention is to pro- Lvide an improved holding and stripping de- 'vice which maybe readily adjusted for dif- "ferent sizes and shapes of' article and in .which the wearing parts may be readily re-` placed when worn.

In the drawings the invention is sho-wnA embodied in di'es for forming sections of sheet metal radiators, but obviously the principle of vconstruction of the dies may be adapted for forming various articles.

In the'accompanying drawings, Figure l is a face view of the bottom'or male die;

Fig. 2 is al similar View of the top or female die; Fig. 3 is a longitudinal section.v

through the bott'om die on the line. 3-4-3,

Fig, '1; Fig. 4 is a vertical` longitudinal section through the top diev lon the l 1ne 4-'4, Fig. 2; and Fig. 5 is abtransvers'e.

vertical section through the two dies on the line 55, Figs. 3 and 4, and also showing the cushioning devices for the stripping rmO.

'Fhe dies illustrated are' adapted to be actuated by any suitable press, the bottom die being suitably secured to the frame or bed plate of the press and the top die being I carried by the vertically movable platen or press head. The means for securing thesev dies to the press bed and platen may be varied within wide limits. Both the top and bottom dies are of sectional `or built up construction as hereinafter described.

The bottom die l comprises a pair of end sections or pieces 2 and one or more intermediate pieces or sections 3, depending to the desired extent.

upon the length ofthe avi-ticle being formed. By moving theend sections farther apart and interposing between the same a larger number ofv intermediate sections, or an intermediate section of greater length, the die can be increased in llength Within limits Each end -section 2 comprisesa base portion 4 and a face or forming portion 5, the latter resting uponthe base portion and be. ing secured thereto by suitable means, such as the tap bolts 6 extending upwardly through holes in the base portion 4. Lat- .eral movement of these two portions .With

reference to each other is prevented by guide members 7 accurately fitting in regis-- tering grooves formed -respectively in the r may be varied within Wide limits. Each of the end' portions is also provided-substantially. at its longitudinal central line with a -circular depression 10 in which fits a boss l1, being secured therein bytap bolts 12 extendingupwardly through the member 4, and serving to press bosses inv the sheet metal articleat both ends'thereof, such for instance as the pipe connecting bosses of sheet metal radiators. By having these boss 'members 11 removablethey can be readily replacedin case of excessive wear, or when it`is desired to change the height to whichthe boss ispressed out.

. The intermediate member" or members comprise a lower or base portion 4a and a .top or face. member 5,these parts being secured together 1n the same manner as the parts 4 and 5 ofthe end sections, namely, by tap bolts 6, and being registered with the end members by means of the stripsror guides 7. The top face of the member 5a of each intermediate section is provided with projections and depressions to match with the configuration ofthe end sections. Vhen adapted for forming-sheet metal radiator sections these intermediate portions are proplate into the trame. n plate is also provided with holes for receivrately lit the latter. n frame or-rmg to dies of various sizes the tive lateral movement. This bolster plate is secured to the bed or frame of the press by suitable means, such as bolts 18 projecting down through holes in the base or bolster Said base or bolster ing tap bolts 19 which extend up into the base members l, 4a, to secure the latter to said bolster plate.

Surrounding the sections of the bottom die and serving as a means to secure them together, is a suitable frame or ringf7 the same comprising side bars or pieces 20' and end members or pieces 21. T he end pieces or members 2l titbetween the ends of` the side pieces 20, and are provided on their ends with tenons or tongues 22 tting into grooves 23 formed in the inner faces of the side members 20, and Asaid end members are secured in place between the side members by means ot' strong cross bolts 24 extending through holes 25, in thel side members and corresponding holes in the end members.

- These bolts serve to clamp the frame menibers togetherand Jform substantially a rectangular frame -or ring surrounding the die sections. The inner faces ot the frame members 2l are curved to the contour ot the end sections 2 of the die so as to acculn order to adapt the side members are provided with a series or holes 25 through any pair of which the bolts '2d may be inserted to clamp the end members 2l in any or the positions permitted by the spacing of the holes 25, to form a Jframe to fit built up dies havingn any de sired number or intermediate sections da." lhe end members 2l are further secured to the side members by means of don/el pins 2? extending through the side members and entering the ends of' the end members.

rlhe top faces of the side members 20' are provided with rabbets 28, and the top faces of the end members are provided With similar rabbets 29 for receiving respectively the side Wearing plates 30 and end wearing plates 3l, which are secured to said side and end pieces by means ot' tap bolts 32 extending up throughlholes in the side and end ieces and entering tap holes in said plates. paid Wearing plates may be reversed end kfor end and side for side to utilize all available edges as they wear out.

yThe frame or ring is movablevertically Liedes@ With respect to the lower die member and acts in conjunction with the upper die mem- Y ber to hold the sheet or plate perfectly flat or level while it is being shaped to prevent wrinkling or buckling, and also acts as a stripper member to eject the formed article from the lower die at the conclusion of the .as the rubber blocks carried by washers or seats 66 held by nuts 67 and iilling tubes 68 on rods 69 threaded into the frame' 60. By turning the nuts 67 the upward pressure against the stripper ring may be increased or diminished, and its position may be ad* justed by inserting loose pins 6l or filling tubes -68 of the necessary length, as will be readily understood. v

rThe top or female die'comprises the two end sections 34 and one or more intermediate sections 35. The end sections 3l are provided on their bottom or working faces with the reversed configurations of the end sections 2 ot" the bottom die, to-wit, with longitudinally. extending depressions 3S corresponding to the projections 8 of the bottom die 2 and intermedia-te elevations 39 corresponding to the depressions 9 of the lower die. r rlhese end sections are also provided with circular seats l0 for receiving the female 'bossing member ll corresponding to male bossing member ll and which.

are secured to the end sections 6 by means of tap bolts l2. These end sections are also provided with a seat extending around the embossing or forming portions 38, 39 for re ceiving the wearing members which extend around the outerredge of the dieface, or in other words, form the outer boundary ot' the die face proper. These wearing members comprise a straight end portion 43, curved corner portions 43a and straight longitudinal portions 44, all ot' which are secured to the end section 86 by suitable tap bolts 45. The projecting portions 39 otl tie female die are also preferably formed in separate renewable pieces, being so shown in the drawings and seated in a suitable groove or depression and secured thereto by tap bolts 46.

The intermediate female die members 35 are provided on their working faces with llong itudinal depressions 38 corresponding to the depressions 38 ot' the end sections 3l, and with longitudinally elevated portions 39a corresponding to the portions 39 or' the end section 3l, which portions 39 are also separate wearing bars seated in suitable grooves in members 35 and secured therein byltap bolts 46a.' The Wearing members 44 of the end sections are continued in these intermediate sections, being indicated at 44a,

c andseated in suitable grooves in the faces of the intermediate sections and secured therein by tap bolts 45a.' v l' The end sections 34 and intermediate sec'- tions 35 are provided in their lower faces with alining grooves 48, and are adapted tol be secured to a suitable base orbolster plate 49, the latter of which is provided With a longitudinal groove 50, said alining groove being adapted to Vreceive a guidebar `51.

The oase or bolster plate 49 is provided With holes 52 for receiving bolts 53 extending up from the die sections134 and 35 respectively into the bolster tion in plate.

The end sectionsv 34 of the top -die are provided on .their side portions With Wings 54 plate for securing' the secwhich. are provided With openings or grooves 55 for receiving the longitudinal tie rods or bolts 56, for tying the several die sections firmly together. The top and bot tom dies vare caused to reciprocate in .exact alinement With'each' other by any suitable means or mechanism, as Will be readily un- Cleistood.

accurately constructed so as to produce pressed sections of absolutely uniform and interchangeable shape.

It is obvious that the particular construction of dies described may be adapted to form pressed articles of a variety of kinds and forms. l

l/Vhat I claim is 1- A fOlmng die comprising end Sectlons vand one or more changeable intermediate sections having Working surfaces matching those ofthe end sections, abase plate, and interlocking guiding means engaging registering grooves in the base plate and in the.

back faces ofthe end and intermediate sections.

2. A forming die comprising end sections;

and one on. more changeable intermediate sections -having curved Working .surfaces matching the `Working surfaces of the end 1 sections, said sections comprising a base and Working` face portions, and interlocking connections between the same. l

3; A. forming die comprising end sections and one or more changeable intermediate sections having Working surfaces matching those of tlieend sections, each of said sections comprising a vbase and a Working face portion, and an interlocking guide strip engaging registering grooves in the top face of the base portion and the back faces of the Working face portions. I i

4. A forming die comprising end sections and lone or more changeable intermediate sections having Working surfaces matching those of. the end sections, some of said secarate embossing memberssecured to said seat. p

5. A forming die comprising end sections and one or more changeable .intermediate sections having Working surfaces matching those of the end sections, longitudinal die members located' interiorly of said die, a framesurrounding said sections and coinprising sidebars and end pieces between said sidebarS, and means for securing said end pieces in various positions.

6. A forming die comprising end sections and one or -more changeable intermediate sections having curved Working surfaces 'matching the .Workingsurfaces of the end sections,intermatching Wear plates on said end and intermediate sections arranged to project normally beyond the Working surfaces of said sections, and means for securing together said end and intermediate sections.

7. A forming die 'comprising end" sections and one or more changeable intermediate sectionshaving Working surfaces matching .tions being provided With a seat, and septhose of the end sections, a frame surrounding said sections and comprising side bars grooved on'their facing sides, end pieces i provided `With teiion ends entering the grooves in said side bars, and means for securing said end pieces to said side bars in various positions to form a continuous structure with tions.

lthe one or more intermediate sec- 8. lA forming die comprising end sections iio and one or more changeable intermediate sections `having Working surfaces matching those of the end sections, said end and intermediate sections being provided With seats, those of the intermediate sections alining With those of the end sections, and Working orWear members secure in said-seats and projecting above the normal faces of the dies.

v9. A forming die comprising end sections and one or moi'efchangeable intermediate sections. having curved Working surfaces matching those ofv -tlieend sections, wear members secured in seats on the, endand 'ntermediate sections and extending peripherally of the die, 'a frame surrounding said end and intermediate sections, a-bolster plate to Whichsaid sections areA secured, ayieldtions are secured, a yielding pressure plate,

and pins supported hy said plate andai: i6 A their ends engaging said frame. In testimony whereof, I have hereunto set my hand. YU 4 CPlAliilJESl SONNEBORN.

litneSSes:V i i. y 'l WILLIAM B. VVHLARTQN` ELBERT L. HYDE. 

